I have been chatting with a friend of mine with how fast my Tahoe would be with my current mods. I currently have a 4.8l with intake, exhaust, longtube headers and a black bear tune. I am curious on my 1/4 mile time would be. He told me that with the motor being stock, I would only get around 17.2 With my 4.8. So with the mods I currently have, I would probably get in the 16's. I will be also adding more mods later. We do not have a race track anymore here on oahu so I want to see how fast your 07+ Tahoe's run and with what mods.